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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Computer Physics Communications 55 (1989), S. 367-380 
    ISSN: 0010-4655
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Computer Science , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 5 (1986), S. 331-331 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 5 (1986), S. 1089-1090 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 4 (1985), S. 448-450 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 34 (1983), S. 16-18 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die thermisch stimulierte Depolarisation von Cellulosenitrat wurde in Abhängigkeit von der Polarisierungsspannung, der Polarisierungstemperatur, der Aufheizgeschwindigkeit und der Lagerzeit gemessen. Ein Maximum, das auf die polare Estergruppe zurückzuführen ist und dessen Höhe mit der Polarisierungsspannung zunimmt, wird bei etwa 50°C beobachtet. Das Maximum tritt bei niedrigen (≤90°C) und hohen (≥140°C) Polarisierungstemperaturen nicht auf. Im dazwischen liegenden Temperaturbereich nimmt der maximale Strom von 100 bis 120°C ab und steigt danach wieder an. Höhe und Temperaturlage des Maximums nehmen mit der steigenden Aufheizgeschwindigkeit zu und mit der Lagerzeit ab.
    Notes: Thermally stimulated depolarization of cellulose nitrate has been measured as a function of polarizing voltage, electret forming temperature, heating rate and storage time. A single peak due to polar side ester group is observed at approximately 50°C, whose magnitude increases with polarizing voltage. The peak is absent for low (≤90°C) and high (≥140°C) electret forming temperatures. In the intermediate temperature range the value of the peak current decreases with the forming temperature from 100 to 120°C and then increases. The magnitude of the peak current and the peak temperature increase with heating rate and decrease with storage time.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 314-317 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die thermisch stimulierten Depolarisationsströme von Polyvinylchlorid-Thermoelektreten, die bei den Formierungs temperaturen Tp = 80, 100, 120 und 130°C bei einer Feldstärke von 10kV/cm hergestellt worden waren, wurden untersucht. Bei 88°C tritt ein scharfer Peak auf, der sich mit Tp nicht verschievt. Die aus dem anfangsanstieg der Kurven ermittelte Aktivierungsenergie beträgt 0,37 ± 0,03 e V. Die TSD-Kurven von Elektreten, Die mit Al-, Sn-, Ag-, und Cu-Elektroden unter sonst gleichen Bedingungen hergestellt wurden, zeigen unterschieldliche Größe des Peak-stromes, der Peaktemperatur und der Fläche unter der Kurve. Dies weist auf die entscheidende Rolle des Elektrodenmaterials bei der Elektretformierung hin.
    Notes: Thermally stimulated depolarisation currents of poly(vinyl chloride) thermoelectrets prepared at the forming temperatures Tp of 80, 100, 120 and 130°C and polarizing field 10 kV/cm, have been studied. One sharp peak apprears at 88°C, which does not shift with Tp. The activation energy found by initial rise method is 0.37 ± 0.03 eV. Studies on the electrode metal effect show that the TSD thermogramms have different values of the magnitude of peak current, peak temperature and the area under the curve, with the electrets prepared under similar polarazing conditions, but using Al, Sn, Ag and Cu as electrodes. This shows that the electrode material plays an important part in electret formation.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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